feat: [bending] 절곡품 관리 API 완성 + 데이터 마이그레이션

- GuiderailModelController/Service/Resource: 가이드레일/케이스/하단마감재 통합 CRUD
- item_category 필터 (GUIDERAIL_MODEL/SHUTTERBOX_MODEL/BOTTOMBAR_MODEL)
- BendingItemResource: legacy_bending_num 노출 추가
- ApiKeyMiddleware: guiderail-models, files 화이트리스트 추가
- Swagger: BendingItemApi, GuiderailModelApi 문서 (케이스/하단마감재 필드 포함)
- 마이그레이션 커맨드 5개: GuiderailImportLegacy, BendingProductImportLegacy, BendingImportImages, BendingModelImportImages, BendingModelImportAssemblyImages
- 데이터: GR 20건 + SB 30건 + BB 10건 + 이미지 473건 R2 업로드

app/Http/Controllers/Api/V1/GuiderailModelController.php

@@ -0,0 +1,89 @@
+<?php
+
+namespace App\Http\Controllers\Api\V1;
+
+use App\Helpers\ApiResponse;
+use App\Http\Controllers\Controller;
+use App\Http\Resources\Api\V1\GuiderailModelResource;
+use App\Services\GuiderailModelService;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class GuiderailModelController extends Controller
+{
+    public function __construct(private GuiderailModelService $service) {}
+
+    private function ensureContext(Request $request): void
+    {
+        if (! app()->bound('tenant_id') || ! app('tenant_id')) {
+            $tenantId = (int) ($request->header('X-TENANT-ID') ?: 287);
+            app()->instance('tenant_id', $tenantId);
+        }
+        if (! app()->bound('api_user') || ! app('api_user')) {
+            app()->instance('api_user', 1);
+        }
+    }
+
+    public function index(Request $request): JsonResponse
+    {
+        $this->ensureContext($request);
+
+        return ApiResponse::handle(function () use ($request) {
+            $params = $request->only(['item_category', 'item_sep', 'model_UA', 'check_type', 'model_name', 'search', 'page', 'size']);
+            $paginator = $this->service->list($params);
+            $paginator->getCollection()->transform(fn ($item) => (new GuiderailModelResource($item))->resolve());
+
+            return $paginator;
+        }, __('message.fetched'));
+    }
+
+    public function filters(Request $request): JsonResponse
+    {
+        $this->ensureContext($request);
+
+        return ApiResponse::handle(
+            fn () => $this->service->filters(),
+            __('message.fetched')
+        );
+    }
+
+    public function show(Request $request, int $id): JsonResponse
+    {
+        $this->ensureContext($request);
+
+        return ApiResponse::handle(
+            fn () => new GuiderailModelResource($this->service->find($id)),
+            __('message.fetched')
+        );
+    }
+
+    public function store(Request $request): JsonResponse
+    {
+        $this->ensureContext($request);
+
+        return ApiResponse::handle(
+            fn () => new GuiderailModelResource($this->service->create($request->all())),
+            __('message.created')
+        );
+    }
+
+    public function update(Request $request, int $id): JsonResponse
+    {
+        $this->ensureContext($request);
+
+        return ApiResponse::handle(
+            fn () => new GuiderailModelResource($this->service->update($id, $request->all())),
+            __('message.updated')
+        );
+    }
+
+    public function destroy(Request $request, int $id): JsonResponse
+    {
+        $this->ensureContext($request);
+
+        return ApiResponse::handle(
+            fn () => $this->service->delete($id),
+            __('message.deleted')
+        );
+    }
+}